Iivalvu ezifanelekileyo kubushushu obuphakathi -40℃～-196℃ zibizwa ngokuba ziivalvu zobushushu obuphantsi, kwaye ezo zivalo zihlala zisebenzisa iibhonethi ezinentamo emide.
Ibhonethi enentamo ende isetyenziselwa ukucacisa ukuba ivalve ye-cryogenic ibandakanya ivalve yokuvala i-cryogenic, ivalve yeglowubhu ye-cryogenic, ivalve yokujonga i-cryogenic, ivalve ye-LNG ekhethekileyo ye-cryogenic, ivalve ekhethekileyo ye-NG ye-cryogenic, njl., ezisetyenziswa ikakhulu kwizityalo zemichiza njengoko 300,000 iitoni ethylene kunye nerhasi yendalo engamanzi.Ulwelo oluphumayo olunobushushu obuphantsi njenge-ethylene, ioksijini elulwelo, i-hydrogen elulwelo, igesi yendalo enyibilikisiweyo, iimveliso zepetroleum ezinyibilikisiweyo, njl. .
Iibhonethi ezinde zentamo ziyafuneka kuba:
(1) Ibhonethi yentamo ende inomsebenzi wokukhusela ibhokisi yokufaka ivalve yobushushu obuphantsi, kuba ukuqina kwebhokisi yokuhlohlwa yenye yezitshixo zevalve yobushushu obuphantsi.Ukuba kukho ukuvuza kule bhokisi yokuhlohla, kuya kunciphisa isiphumo sokupholisa kwaye kubangele irhasi enyibilikisiweyo ibe ngumphunga.Kwiqondo lokushisa eliphantsi, njengoko iqondo lokushisa liyancipha, i-elasticity yokupakisha iyanyamalala kancane kancane, kwaye ukusebenza kobungqina bokuvuza kuncipha ngokufanelekileyo.Ngenxa yokuvuza kwendawo ephakathi, ukupakishwa kunye nesiqu sevalve ngumkhenkce, nto leyo echaphazela ukusebenza okuqhelekileyo kwesikhondo sevalve kwaye ibangela ukuba isikhondo sevalve siye phezulu siphantsi.Ukupakisha kukrweliwe, kubangela ukuvuza okunzulu.Ngoko ke, kuyimfuneko ukuqinisekisa ukuba ubushushu benxalenye yokuzaliswa bungaphezulu kwe-8 °C.
(2) Isakhiwo sevalve enentamo ende silungele ukusonga izinto zokugquma ezibandayo ukuthintela ukulahleka kwamandla abandayo eevalve zobushushu obuphantsi.
(3) Ulwakhiwo olude lwentamo yevalve ye-cryogenic lulungele ukutshintshwa ngokukhawuleza kwendawo ephambili yevalve ngokususa isivalo sevalve.Ekubeni imibhobho yenkqubo kunye neevalve kwicandelo elibandayo lesixhobo lihlala lifakwe kwi- \ 'ibhokisi ebandayo\', isigqubuthelo sevalve esinentamo ende sinokuphuma "kwibhokisi ebandayo" eludongeni.Xa utshintsha iindawo eziphambili zevalve, kuyimfuneko kuphela ukususa kunye nokutshintsha isivalo se-valve ngaphandle kokuqhawula umzimba we-valve.Umzimba wevalve kunye nombhobho zidityaniswe zibe ngumzimba omnye, nto leyo inciphisa ukuvuza kwebhokisi ebandayo kangangoko kwaye iqinisekisa ukuqina kwevalve.
Ixesha lokuposa: Oct-11-2022